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Considering all transistors to be similar and β is very large, when I1 = 10 mA, find current I2.

Considering all transistors to be similar and β is very large, when I1 = 10 mA, find current I2. Correct Answer 25 mA

Let current through the transistor Q1/Q2 be IC. Since both are similar, we can say that, IC = I1/2 Similarly, current through transistors Q3 to Q7 is assumed to be IC’, where IC’ = I2/5 Since all transistors are similar. IC = IC’ I2 = 5IC’ = 5 IC = 2.5*I1.

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